Mortise: Private On-Device AI

One purchase. No subscription

$19.99 · Designed for iPad. Not verified for macOS.

On-device AI chat with no account and no subscription. Attach a PDF, Word file or slide deck and get answers that cite the page, even with the network off. Mortise runs open language models entirely on your own device. There is no server to trust, because there is no server at all — no account, no sign-in, no cloud inference, no telemetry, and nothing metered. A MODEL CATALOG THAT FITS YOUR HARDWARE A curated list of open-weight models, most of them licensed Apache 2.0 or MIT. Every entry carries an on-device memory estimate, so you can see what your Mac, iPad, or iPhone will actually run before you download anything. The weights land on your own disk and run for as long as you like. CHAT WITH YOUR DOCUMENTS Attach a PDF, Word document, or PowerPoint deck and ask questions about it. Mortise indexes it locally and picks the right retrieval strategy — whole document, chunked, or summarized — then answers citing the page or slide it drew from, shown beside the answer. The file never leaves the machine. BUILD A SEARCHABLE LIBRARY Group related documents into a named knowledge base and search all of them at once. Mortise ranks the matching passages, stitches neighbouring ones back into whole excerpts, and has the model answer with numbered citations pointing at the source file. READS WHAT YOU CANNOT COPY AND PASTE Scanned pages and the text inside slide images are read on device with Apple's Vision framework, so image-only material is searchable too — still with nothing sent anywhere. GROUNDED ANSWERS FROM THE WEB — OPTIONAL, OFF BY DEFAULT When a question needs current information, a model can call a live web search and answer with clickable citations. Search stays off until you switch it on and supply your own Brave Search API key. Only the search query leaves your device, sent straight to Brave with no server of ours in the path. CONVERSATIONS THAT SURVIVE MODEL SWAPS Switch from a small model to a large one mid-conversation and keep the thread. Conversation memory is shared across every model in the catalog, so your context travels with you. ENCRYPTED AT REST Conversations, imported documents, and everything derived from them are encrypted where they sit — not just tucked behind a login. The key is generated on your device and kept in the Apple Keychain, so it never syncs anywhere. On iPhone and iPad, Apple's file protection keeps those files unreadable while the device is locked. ONE APP, THREE PLATFORMS A universal app: one purchase covers iPhone, iPad, and Mac, with the same catalog and the same features on each. Every install keeps its own encrypted store on the device, so nothing has to round-trip through a cloud to reach your other hardware. WHAT IT DELIBERATELY DOES NOT DO No account, sign-in, or email address. No analytics, telemetry, or usage statistics. No ads, no tracking, no advertising identifiers. No subscription and no per-token billing. No access to your camera, microphone, photo library, or contacts. BEFORE YOU BUY Mortise needs Apple silicon: an M-series Mac, or a recent iPhone or iPad. It ships without model weights — on first launch it recommends the models that fit your device and downloads the one you pick, over Wi-Fi. Models range from a few hundred megabytes to several gigabytes; bigger models answer better, run slower, and need more memory. Language models can be confidently wrong and can produce content unsuitable for children. Mortise does not filter model output. Privacy policy: https://www.mortiseapp.com/privacy/ Support: https://www.mortiseapp.com/support/

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Bug fixes: • Long formulas no longer spill past the edge of a reply. They scroll sideways instead, and stay tidy while the answer is still being written. • Word and PowerPoint text now reads correctly. Curly quotes, dashes and accented characters were showing as garbled symbols; documents you have already added are re-read automatically, so older files are fixed too. • On iPad, the conversation list no longer overflows in a short window.

The developer, Exception To Policy LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Exception To Policy LLC
    Size
    • 61.6 MB
    Category
    • Productivity
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    • iPad
      Requires iPadOS 26.0 or later.
    • Mac
      Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.0 or later.
    Languages
    • English
    Age Rating
    13+
    • 13+
    • Infrequent
      Profanity or Crude Humor
      Horror/Fear Themes
      Medical Treatment information
      Alcohol, Tobacco, Drug Use or References

      Contains
      Health or Wellness Topics
    Copyright
    • © 2026 Exception To Policy